fix(ci): better emulate docsrs by not building dependencies

Author: Rolv-Apneseth

.github/workflows/rustdoc.yml

@@ -17,11 +17,9 @@ jobs:
 
     - name: Install nightly toolchain
       uses: dtolnay/rust-toolchain@master
-      with:
-        toolchain: nightly-2025-10-30  # date of 1.91, because 1.92+ removed doc_auto_cfg, which is not yet supported by all dependencies
 
     - name: Cache dependencies
       uses: Swatinem/rust-cache@v2
 
     - name: Check rustdoc build
-      run: RUSTDOCFLAGS='--cfg docsrs' cargo +nightly doc --all-features -Zunstable-options -Zrustdoc-scrape-examples
+      run: RUSTDOCFLAGS='--cfg docsrs' cargo +nightly doc --all-features -Zunstable-options -Zrustdoc-scrape-examples --no-deps